| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | what was [verb] [be] | 134 |
|
| 2 | what be happening [be] | 59 |
|
| 3 | what [be] happening [be] | 59 |
|
| 4 | what was [v-ing] [be] | 24 |
|
| 5 | what was happen [be] | 16 |
|
| 6 | what [was/were] happening [be] | 16 |
|
| 7 | [pron] was happening [be] | 16 |
|
